US2045961A - Loom shuttle - Google Patents

Description

0. V. PAYN E LOOM SHUTTLE Filed Aug. 9, 1954 2 Sheets-Sheet 1 my m w w wP e m m m w u n w 0. v. PAYN E LOOM SHUTTLE FiledAug. 9} 1934 2 Sheets-Sheet 2 Knventor Oscar V. Pangne 1 M I @WV/Q 7 Attorneys Patented June 30, 1936 PATENT FFICE '-LooM SHUTTLE" Oscar V. Payne, Leicester, 'Mass assignor to Crompton & Knowles Loom Works, Worcester, Mass, acorporation of Massachusetts v Application August 9, 1934, Serial No. 739,083

,2 Claims. (01. 139 -209) This invention relates to loom shuttles and is a continuation in part of my prior application Serial No. 650,334, filed by me January 9,193.3, and

issued as Patent No. 1,977,083.

It is the general object of my invention to provide an improved shuttle for use in a 100m having mechanism for indicating the condition of the weft supply in the running shuttle.

More specifically my invention-relates to. special features in a loom shuttle by which a pneumatic indication of the condition of weft supply may be given without contact of the weft by any moving or mechanical part.

My invention further relates to, arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

Preferred forms ofthe invention are shown in the drawings, in which V Fig. 1 is a plan View, partly in section, of a shuttle embodying my invention, together with.

certain associated loom parts;

Fig. 2 is a sectional side elevation, taken along the line 2-2 in Fig. 1;

Fig. 3 is an enlarged sectional elevation, taken along the line 3--3 in Fig.2;

Fig. 4 is a sectional side elevation showing a second form of my invention;

Fig.5 is a detail plan view, looking in the direction of the arrow 5 in Fig. 4; I

Fig. 6 is an enlarged sectional elevation, taken along the line 66 in Fig. 4;

Fig; 7 is a plan view showing a third form of my invention;

Fig. 8 is a sectional side elevation, taken along the line 8-8 inrFig. 7, and

Fig. 9 is an enlarged sectional elevation, taken along the line 99 in Fig. 8.

Referring to Figs. 1 to 3, I have shown a portion of a lay l having a back box plate I I, front binder l2 and picker l3 which provide a box for the shuttle S. The shuttle S is of a usual type and is shown as provided with guides l4 and I through which the weft W is threaded.

The weft W is indicated as wound on a cop tube 2|l'having a slot 2 disposed at one side thereof and near the base of the cop. A sleeve 22 of thin rubber or other similar and suitable material is mounted on the cop tube and covers the slot 2|. 7

' The cop tube 20 is positioned in the shuttle S by placing the tube on a spindle 25 having ahead 26 (Fig. 2) resting on a block 21 and transversely grooved to receive a pivotal projecting portion or rib 28 on the block 21.

, municating with a transverse passage 42.

The upper face of the head 26 is formed with two oppositely inclined faces 29 and is engaged by a fiat spring 30 which is secured in a recess in the top of the shuttle by a screw 3|. The apex 32 of the spindle head 25 is off-center with respect to the pivotal projection 28, so that the spring 30 holds the spindle firmly in horizontal position during loom operation, as clearly indicatspindle 25 is swung partially upward and the spring 30 engages one of the inclined faces 29 to -hold the'spindle in upwardly inclined position during the replacement of the exhausted weft carrier. Y

The spindle 25 is provided with a recess 40, in itsbase' 26 and with an axial passage 4| com- The transverse passage 42 communicates with a Segmental recess 43 in the surface of the spindle 25, 5 so that a continuous air passage is formed through the recess 40, axial passage 4|, transrubber ball 45, is mounted in a recess in the shuttle S below the spring 30 and is provided with an extension 46snugly fitting inthe recess M! and having an axial passage 41 communicating with ,the passage 4| in the spindle 25.

The shuttle S is also provided with an opening 48 in the side of the shuttle through which a yieldingly mounted plunger 5!] may enter and engage the ball 45 as the lay approaches front center. The plunger 55 is mounted on the loom frame 5| and is electrically connected to give an indication of weft exhaustion when the lay reaches front center, unless the plunger 50 is displaced forwardly by the rubberrball 45 so that the contact screw 52 will not engage a contact plate 53 on the front face of the binder l2.

For the purposes of this application it is sufficient to state that if the ball resists deflation, the plunger 50 is moved forward with the lay, and the contact screw 52 is held out of engagement with a contact plate 53 on the front of the binder l2. If, on the other hand, the ball 45 does not resist deflation, the parts remain in the position shown in Fig. 1', with the screw 52 engaging the plate 53 and completing an electrical circuit by which loom stoppage is eifected. A more comstoppage of the loom.

will be found in my prior application above identified.

When the active shuttle S contains a weft carrier or cop tube having a suflicient supply of weft W thereon, the rubber sleeve 22 is held tightly over the slot 2i and is held in close engagement with the cop tube 29 at both ends of the slot 2|. Accordingly, the air in the ball 45 is unable to escape rapidly when the ball is engaged by the plunger 50, and consequently the plunger 50 is moved forward, and thereby prevents contact .of V

the screw 52 with the plate 53.

hausted, as indicated in Fig. 1, there will remain only a few turns of weft at the extreme bottom of the cop tube 2!] and overlying the bottom end ball is rapidly and partially deflated, either by escape of air from the free end of the sleeve 22 or by the outward expansion of the thin sleeve 22, as indicated in Fig. 1. In either event, sufiicient air escapes quickly from the ball 45 to permit the screw 52 to engage the contact plate 53 and thereby complete the electrical circuit which causes .When the shuttle S is at the opposite side of the loom, a supplemental contact is opened in the electrical circuit, so that engagement of the screw 52 with the plate 53 will not then com plete the circuit and give an undesired indication.

My improved detecting mechanism is particularly desirable for use with silk or other fine or delicate weft threads, as no mechanical element engages the weft in the detecting operation, as has been customary in weft detectors previously in commercial use. The operation of the detecting mechanism depends entirely on the retention or rapid escape of air from the rubber ball 45, and such rapid escape of air is directly controlled by the presence or absence of the final layer of weft windings about the middle and left-hand portions of the rubber sleeve 22 (as Viewed in Figs. 1 and 2).

In Figs. 4, 5, and 6 I have shown the adaptation of my invention to'a type of spindle in which the spindle blade 60 is provided with a resilient portion 6| yieldingly engaging the inner surface of the cop tube 20 and preventing axial displacement thereof.

The construction is substantially the same as that previously described, except that the air passage 62, transverse passage'63, and segmental retially deflated to give an indication of weft exhaustion.

, In Figs. '7, 8, and 9 I have shown a third form of my invention in which the surface of the spin When the weft supply is substantially 'ex-.

dle 10 is provided with a helical rib 'H in the portion adjacentthe lateral air openings 12 which connectfwith the longitudinal air passage 13.

With this construction the rib 1| holds the inner surface of the cop tube 20 spaced from the spindle 10 sufficiently to allow air to circulate entirely around-the spindle and it is thus unnecessary to provide'the segmental recess in the body of the spindle as shown in the previous forms.

' 'I have shown two lateral openings 12 but more or less openings may be used as seems advisable.

The use and operation of this form of my invention is identical with those previously described. In the drawings'I have shown the spindle 10 as a solid spindle; whereas in Fig. 1 the spindle 'is shown as provided with a longitudinal slit'25 Both of these forms of spindles are old and well known and for the purposes of my invention may be considered interchangeable.

Having thus described my invention and the advantages thereof I do not wish to be limited to the details herein disclosed, otherwise than as set forth in theclaims, but what I claim is:-

1. In 'a loom shuttle, a spindle having a head with a transverse groove in'one lateral face and an inclined face at the opposite side of said head, a block in said shuttle having a rib seated in said groove, and a spring positioned to engage said in-- clined face and hold said spindle in raised position. V

2. In a loom shuttle, a spindle having a head With a transverse groove in one lateral face and an inclined face at the opposite side'of said head,

tion, said spring also engaging said head when in lowered position at a point offset toward the tip of the spindle from said transverse groove.

OSCAR V. PAYNE.

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